Hybrid Coating with High Zn <sup>2+</sup> Selectivity Achieves Stable Zinc Anodes
A nano-Zn<sub>2</sub>SnO<sub>4</sub> (ZTO)/cellulose acetate (CA) hybrid coating (CZ) was designed for Zn anodes via a DFT-guided synthesis. DFT calculations revealed ZTO's Zn<sup>2+</sup>-selectivity and low migration barriers, enabling dual ion-sieving and acceleration effects. The C═O groups in CA formed Lewis acid-base pairs with desolvated Zn<sup>2+</sup> and ZTO, synergistically regulating ion flux. The CZ coating combined superior film-forming ability with high Zn affinity, suppressing side reactions while homogenizing Zn<sup>2+</sup> deposition. As a result, CZ-Zn anodes achieved stable cycling for 3000 h at 5 mA cm<sup>-2</sup>. Full cells paired with NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> cathodes exhibited extended cyclability and enhanced rate performance. This work provides a universal strategy for Zn anode protection through multifunctional hybrid coatings.
Authors
- Yujie Ma (ORCID: https://orcid.org/0000-0001-7758-2625)
- Haifeng Bian
- Xiangkang Meng (ORCID: https://orcid.org/0000-0002-8568-1583)
- Fengqi Li (ORCID: https://orcid.org/0000-0003-4056-548X)
- Qing Zhou
- Jian Gu (ORCID: https://orcid.org/0000-0003-1567-9995)
- Shaochun Tang (ORCID: https://orcid.org/0000-0003-4400-708X)
- Zhonglu Hu
- Shunshun Jia
- Ge Xue
Institutions
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Nanjing University (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-10-17
- DOI
- https://doi.org/10.1021/acs.nanolett.5c04178
- Citations
- 4
- Primary Topic
- Material Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 11.71